/*
 * Copyright (c) 2009-2018, b3log.org & hacpai.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,  
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.b3log.latke.ioc.inject;

import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

/**
 * <p>Specifies that an annotation type is a stereotype.</p>
 * 
 * <p>In many systems, use of architectural patterns produces 
 * a set of recurring bean roles. A stereotype allows a framework 
 * developer to identify such a role and declare some common metadata 
 * for beans with that role in a central place.</p>
 * 
 * <p>A bean may declare zero, one or multiple stereotypes, by
 * applying the stereotype annotation to the bean class or producer 
 * method or field.</p>
 * 
 * <p>A stereotype encapsulates any combination of:</p>
 * 
 * <ul>
 * <li>a default scope, and</li>
 * <li>a set of interceptor bindings.</li>
 * </ul>
 * 
 * <p>The default scope of a stereotype is defined by annotating the 
 * stereotype with a scope type. A stereotype may declare at most one 
 * scope. If a bean explicitly declares a scope, any default scopes 
 * declared by its stereotypes are ignored.</p> 
 * 
 * <pre>
 * &#064;RequestScoped
 * &#064;Stereotype 
 * &#064;Target(TYPE) 
 * &#064;Retention(RUNTIME) 
 * public &#064;interface Action {}
 * </pre>
 * 
 * <p>The interceptor bindings of a stereotype are defined by annotating 
 * the stereotype with the interceptor binding types. A stereotype may 
 * declare zero, one or multiple interceptor bindings. An interceptor binding 
 * declared by a stereotype is inherited by any bean that declares that 
 * stereotype.</p>
 * 
 * <pre>
 * &#064;RequestScoped 
 * &#064;Secure 
 * &#064;Transactional 
 * &#064;Stereotype 
 * &#064;Target(TYPE) 
 * &#064;Retention(RUNTIME) 
 * public &#064;interface Action {}
 * </pre>
 * 
 * <p>A stereotype may also specify that:</p>
 * 
 * <ul>
 * <li>all beans with the stereotype have defaulted bean EL names, or 
 * that</li>
 * <li>all beans with the stereotype are alternatives.</li>
 * </ul>
 * 
 * <p>A stereotype may declare an empty 
 * {@link javax.inject.Named &#064;Named} annotation, which specifies 
 * that every bean with the stereotype has a defaulted name when a 
 * name is not explicitly specified by the bean.</p>
 * 
 * <pre>
 * &#064;RequestScoped 
 * &#064;Named 
 * &#064;Secure 
 * &#064;Transactional 
 * &#064;Stereotype 
 * &#064;Target(TYPE) 
 * &#064;Retention(RUNTIME) 
 * public &#064;interface Action {}
 * </pre>
 * 
 * <p>A stereotype may declare an 
 * {@link javax.enterprise.inject.Alternative &#064;Alternative}
 * annotation, which specifies that every bean with the stereotype is 
 * an alternative.</p>
 * 
 * <pre>
 * &#064;Alternative 
 * &#064;Stereotype 
 * &#064;Target(TYPE) 
 * &#064;Retention(RUNTIME) 
 * public &#064;interface Mock {}
 * </pre>
 * 
 * <p>A stereotype may declare other stereotypes. Stereotype 
 * declarations are transitive. A stereotype declared by a second 
 * stereotype is inherited by all beans and other stereotypes that 
 * declare the second stereotype.</p>
 * 
 * @see javax.enterprise.inject.Model the built-in stereotype <tt>&#064;Model</tt>
 * 
 * @author Pete Muir
 * @author Gavin King
 */

@Retention(RUNTIME)
@Target(ANNOTATION_TYPE)
@Documented
public @interface Stereotype {}
